swimLilah Matsumura
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 27.18 | A+0.89s to AA | 2025-11-02 | 55th Annual David Graham Memorial Meet venue |
| 100 Freestyle | SCY | 57.59 | A+0.60s to AA | 2025-12-14 | 2025 CA GWSC Winter Age Group Invitational venue |
| 200 Freestyle | SCY | 2:06.82 | A+4.13s to AA | 2026-02-21 | BUEN February Coastal Champs venue |
| 500 Freestyle | SCY | 5:37.10 | A+6.41s to AA | 2024-12-14 | 2024 CA GWSC/SCS WAG venue |
| 1000 Freestyle | SCY | 11:45.12 | A+16.63s to AA | 2025-11-21 | 2025 CANY Cranberry venue |
| 100 Backstroke | SCY | 1:16.81 | +1.82s to B | 2025-10-11 | 2025 CA Paseo Fall Kickoff Season Opener venue |
| 100 Breaststroke | SCY | 1:27.27 | +0.68s to B | 2025-10-12 | 2025 CA Paseo Fall Kickoff Season Opener venue |
| 50 Butterfly | SCY | 30.56 | BB+0.47s to A | 2025-11-02 | 55th Annual David Graham Memorial Meet venue |
| 100 Butterfly | SCY | 1:05.24 | BB+1.15s to A | 2026-02-21 | BUEN February Coastal Champs venue |
| 200 Individual Medley | SCY | 2:34.40 | BB+11.01s to A | 2025-10-12 | 2025 CA Paseo Fall Kickoff Season Opener venue |
| 50 Freestyle | LCM | 31.17 | A+1.28s to AA | 2024-07-28 | 2024 CA SCS/ BREA Summer A/G Champs slow pool |
| 100 Freestyle | LCM | 1:05.43 | A+0.94s to AA | 2025-07-24 | 2025 CA SCS Summer A/G Champs CANY venue |
| 200 Freestyle | LCM | 2:22.66 | A+3.37s to AA | 2025-07-25 | 2025 CA SCS Summer A/G Champs CANY venue |
| 400 Freestyle | LCM | 4:59.47 | A+4.58s to AA | 2025-07-26 | 2025 CA SCS Summer A/G Champs CANY venue |
| 800 Freestyle | LCM | 10:48.76 | BB+13.47s to A | 2026-06-14 | 2026 SCS June AG Invite-CANY venue |
| 100 Backstroke | LCM | 1:30.76 | +3.27s to B | 2025-05-25 | Canyons 15th Annual Red, White and Blue Mem venue |
| 100 Breaststroke | LCM | 1:44.33 | +5.14s to B | 2025-04-13 | 2025 Buenaventura LCM Opener slow pool |
| 50 Butterfly | LCM | 34.65 | BB+1.06s to A | 2026-05-24 | BUEN Memorial Day LC Meet venue |
| 100 Butterfly | LCM | 1:17.30 | BB+4.91s to A | 2025-05-24 | Canyons 15th Annual Red, White and Blue Mem venue |
| 200 Individual Medley | LCM | 2:55.41 | BB+11.02s to A | 2026-05-24 | BUEN Memorial Day LC Meet venue |
| 400 Individual Medley | LCM | 6:38.20 | B+19.41s to BB | 2025-05-23 | Canyons 15th Annual Red, White and Blue Mem venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 16.
Pool tags are a venue speed heuristic (median deviation of all swims there vs each swimmer's typical time) — see the venue page for the method.
Fastest relay legs
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 100 Freestyle | LCM | 1:06.56 | flying | 400 Free Relay (leg 4) | 2024-07-28 | 2024 CA SCS/ BREA Summer A/G Champs |
| 200 Freestyle | LCM | 2:33.85 | flat | 800 Free Relay | 2024-07-25 | 2024 CA SCS/ BREA Summer A/G Champs |
Reconstructed from relay split marks. Flat = lead-off (comparable to individual times); flying starts run ~0.5–0.7s fast and are not PRs.
IMX / IMR
IMX 15-16 · LCM
1692 points (3/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 400 FR LCM | 4:59.47 | 703 |
| 200 IM LCM | 2:55.41 | 546 |
| 400 IM LCM | 6:38.20 | 443 |
| 200 BK LCM | — | 0 |
| 200 BR LCM | — | 0 |
| 200 FL LCM | — | 0 |
IMR 15-16 · SCY
2626 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:06.82 | 684 |
| 100 BK SCY | 1:16.81 | 389 |
| 100 BR SCY | 1:27.27 | 403 |
| 100 FL SCY | 1:05.24 | 625 |
| 200 IM SCY | 2:34.40 | 525 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 57.59
Front half 27.51s · back half 30.08s
200 Freestyle SCY 2:06.82
Front half 60.94s · back half 65.88s
500 Freestyle SCY 5:37.10
Front half 165.78s · back half 171.32s
1000 Freestyle SCY 11:45.12
Front half 349.49s · back half 355.63s
100 Backstroke SCY 1:16.81
Front half 38.01s · back half 38.80s
100 Breaststroke SCY 1:27.27
Front half 40.93s · back half 46.34s
100 Butterfly SCY 1:05.24
Front half 31.12s · back half 34.12s
200 Individual Medley SCY 2:34.40
Front half 72.87s · back half 81.53s
400 Freestyle LCM 4:59.47
Front half 147.63s · back half 151.84s
800 Freestyle LCM 10:48.76
Front half 323.82s · back half 324.94s
100 Backstroke LCM 1:30.76
Front half 44.17s · back half 46.59s
100 Breaststroke LCM 1:44.33
Front half 48.42s · back half 55.91s
200 Individual Medley LCM 2:55.41
Front half 84.71s · back half 90.70s
400 Individual Medley LCM 6:38.20
Reaction time
From electronically-timed starts only (~2% of corpus swims carry a reaction time). PRs with a recorded reaction show an RT chip in the splits section above.
Progression
Faster times are higher. One card per event, all courses & history.